Java 和 RFC 3986 URI 编码
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Java and RFC 3986 URI encoding
提问by Mark
is there a class to encode a generic Stringfollowing the RFC 3986 specification?
是否有一个类可以String按照 RFC 3986 规范对泛型进行编码？
That is: "hello world"=> "hello%20world"Not (RFC 1738): "hello+world"
即："hello world"=>"hello%20world"不是（RFC 1738）："hello+world"
Thanks
谢谢
采纳答案by Mark
回答by MeBigFatGuy
If it's a url, use URI
如果是 url，请使用 URI
URI uri = new URI("http", "//hello world", null);
String urlString = uri.toASCIIString();
System.out.println(urlString);
回答by Amit Tumkur
Source : Twitter RFC3986 compliant encoding functions.
来源：Twitter RFC3986 兼容编码函数。
This method takes string and converts it to RFC3986 specific encoded string.
此方法采用字符串并将其转换为 RFC3986 特定的编码字符串。
/** The encoding used to represent characters as bytes. */
public static final String ENCODING = "UTF-8";
public static String percentEncode(String s) {
if (s == null) {
return "";
}
try {
return URLEncoder.encode(s, ENCODING)
// OAuth encodes some characters differently:
.replace("+", "%20").replace("*", "%2A")
.replace("%7E", "~");
// This could be done faster with more hand-crafted code.
} catch (UnsupportedEncodingException wow) {
throw new RuntimeException(wow.getMessage(), wow);
}
}
回答by Jason Dunkelberger
In the case of Spring Web applications, I was able to use this:
在 Spring Web 应用程序的情况下，我能够使用它：
UriComponentsBuilder.newInstance()
.queryParam("KEY1", "Wally's crazy emp?rium=")
.queryParam("KEY2", "Horibble % sign in value")
.build().encode("UTF-8") // or .encode() defaults to UTF-8
returns the String
返回字符串
?KEY1=Wally's%20crazy%20emp%C3%B4rium%3D&KEY2=Horibble%20%25%20sign%20in%20value
A cross check on one of my favorite sites shows the same result, "Percent encoding for URIs". Looks good to me. http://rishida.net/tools/conversion/
对我最喜欢的网站之一进行交叉检查显示了相同的结果，“URI 的百分比编码”。对我来说看上去很好。http://rishida.net/tools/conversion/
回答by Radu Stoenescu
In don't know if there is one. There is a class that provides encoding but it changes " " into "+". But you can use the replaceAll method in String class to convert the "+" into what you want.
不知道有没有。有一个提供编码的类，但它将“”更改为“+”。但是您可以使用 String 类中的 replaceAll 方法将“+”转换为您想要的。
str.repaceAll("+","%20")
str.repaceAll("+","%20")
